Door-switch.



J. G. PETERSON.

Doon SWITCH.

APPLIUATIOH FILED MAY 1B, 1910.

1,023,224. Patented Apr. 16, 1912.

/4 fluff 2 Wzlzewes. Jnvenior:

.25' faces of the casings und the edges of the UNITED STATES PATENT OFFICE.

Jolm. PETERSON', 0F HARTFORD, CONNEGQICUT, s516303 T0 ELECTRIC COMPANY, 0F HARTFORD, CONNECMCUT, 00mm 0F GOK mateur.'

noomswrron.

1,023,224. Specimen t man 2mn. Pgtented Api- 16, 191% appunti-ten ma wie, ma. mm an. senses.

To all whom it may concern:

Beit known that I, J omxx G. Pmason, a citizen of the United States. residingl at. Hartford,.in the county of Hartford and State of Connecticut, hare invented n new and useful Im )rarement in Door-Switches, of which the f low ing is a specification.

Door switches are designed to be set into cnsings in such positions that when the doors are'clqsed the Stiles engage and force the push buttons inwardlr, and cause thc mechanisms to bc actuated for opening or closing the circuits as the case may he. In order' to actuate the mechanism the button lntlst be nailed-inward a specific distance. and yet t le button must notproject so much as to interfere with the tight' closing of the door, or put undue strain upon the hinge butts or the switch. Owing to the shrinking and swelling of doors and casingnralsn the sagging of door and the settling of bulldings, and the irregularity with which tite hinge butts are set, tite spaces between the Stiles of doors vary. As a result of this the actions of the prior door switches are irrcg lliar and uncertain, for if they operate satisfactorily when first installed, often in a duurt time thev fail to operate on account of a widening of the space between the janlhs mul stilcs.

The object of this invention is to rot-idc a door switch with ll Apush button which will prt-ject sulllcieutlv far to insure the operation of the switch at all tintes, regardless of the width of thc space between the stitornlld easing, and will vleld after the switch is actuated and not interfere with the shutting nl the door or .strain the switch. This object i` attained by providing.' such switches with means het wcen the, button and the rocker al-ln or other equivalent operating part of thc switch mechanism proper, which ls .stilTer than the siringal which throws the stl-itch. alld )'et w lich has sullicient reslience to permit thc hllltoll to be forced ill bv the than' ulter the switch has been upcratcl The invention is applicable to practically :lll of tho -alla p door `-witchus ill uw at the present time, url-llliglp'c l ot' the nceolupartying drawings :sh "wiifl de rlew of a maillon form l ',ttuoltpnilrh that ls collstt'ut-tell ucc-rtiiligjtti this invention. with the rectpte'chicuii!! -"":li-(al ill lr-.ler tu vxptlsn 'he actuatingmffvihft'l-tu. l p 2 :hou-5 a detail view of the rocker plate, push buttontand yielding connection between these par s. t

The receptacle 1, which is shown; is of common form and material. Attached Yto the ends of this receptacle are the usual fastening ings 2. and over thefront is the face plate 3. In the receptacle are the necessaryI stationary contacts 4. These are connected wittntcrminals to which the ends of the clrcult wires are designed to be connected by binding screws 6.

The actuating mechanism which is illustrated is of common form and arrangement. This` mechanism being welt known to those familiar with this nrt, it is not .described in detail. It is suilicient to point out that the actuating mechanism illustrated is mounted on a frame plate T which is fastened to the inside of the bottom of the receptacle. Prnjeetiug from this is an arbor S; turning upon which is a rocker )late 9. The nloioble contact 10 is lnotnltc on a plate 11 that is pivoted on the frame. This movable contact the movable contact to be engaged with and disengaged from the stationarvl contacts with a snap. by lncans of the en s t2y ofthe spring which is coiled about the arbor in the usual manner and is n'lade tense by tite movement of the rocher plate. In this form of switch a spring coiled about the arbor has one Vend 13 ,enga d with the rocker plate, and the Vother ent 1t en raged with the ralne plate ln such manner t att tho tension nf this spring norlllally holds the rocker plato in such position that the movable contat-t in engaged wtll the lnational-y contacts.

The push button 17| which projects through the face plate is connected with the end of the rocker late hy a .spiral spring 1d. This spring stit'er tllzn the sprintf t3. 14, su that when the huttlal is puslletl`in. the tension .if the spring 13. 14, is nlelcmllc and the tllerhallisul actuated bv lllc spring 1:?, lud then the spring 16 .vichln'allnwillg the hillton tl'l more farther ill 'tls the door is closed: When the door is opened and the huttnu :lull spring.' 11' are relieved. the spring.' 13. i4. forces lhl-tpart-l nur and allows the actuating spring.r l2 tu thv-.w the luuvahle contact into engagement with tht` .stativ-nary ("lillilk'lrl.

'l'he invention rhtitlull i-:

t, In a door switrh, the combination lf a no rocker plate, a; spring for moving said plate in one dreotion, a push button, and a` spri hat is stiexf than the first mentlonl spring onnecting the button and the plate.

2. In a. door switch', the combination with the swith mechanism and the spring for said mechafnsm, of a push button,

`and a Spring "that is ster'thanthe first mentioned spring', ar ed" .between the push button andth sw'k: mechn'sm.

AJOHANN G. PETERSON; Witnesses`:`

HARRY R. WILLIAMS,

TOSEPHTINE M. STRExrPFEm 

